Facebook readers got in on the discussion in advance of our live chat Tuesday at 1 p.m. EST with Peter Rosenthal, professor emeritus of mathematics and adjunct professor of law at the University of Toronto. Imagine if only specially trained police officers carried guns, he wrote.

Our Big Ideas expert, Trish Hennessy, believes Toronto should be a living-wage city, and thusly minimum wage should be raised to $16.60. Our Facebook and Twitter readers had a lot to say about this Big Idea — many were not in favour.

Imagine if only specially trained police officers carried guns, writes our Big Ideas expert, Peter Rosenthal, professor emeritus of mathematics and adjunct professor of law at the University of Toronto. Rosenthal will lead a live chat Tuesday, March 11, at 1 p.m. EST.